haüyne crystals - blue embedded in surrounding minerals
hematite - almost black, smooth crystals with excellent facets.
The haüyne has my vote in this round. I have a weakness for blue, though the allure of #MartianBlueberries hematite is strong...
The pictures seemed to be missing from the original post, so I attached pics of #hauyne and #hematite to this post […]
[Original post on mastodon.cooleysekula.net]
Close-up image of the "Berry Bowl" on Mars, a rock formation rich in small, hematite-rich spherules nicknamed "blueberries" by scientists. These 4mm diameter orbs are embedded in and around the rocks, suggesting deposition from water. The image shows a circular patch of different composition in the underlying rock, providing clues to their origin. Captured by the Opportunity rover on its 48th Sol.
Astronomy Picture from 05/04/2004
A Berry Bowl of Martian Spherules
Source: https://apod.nasa.gov/apod/ap040405.html
#MarsExploration #OpportunityRover #MartianBlueberries #BerryBowl #SpaceRocks #Hematite #PlanetaryScience #Astrology #MarsMystery #SpaceExploration #NASA
